P3100SC Equivalent & Substitute Parts

Part Overview

The P3100SC is a Transient Voltage Suppressor (TVS) thyristor manufactured by Littelfuse Inc., designed for overvoltage protection in surface-mount applications. This component operates at 275V off-state voltage with a peak pulse current rating of 400A (8/20µs). The P3100SC is classified as obsolete, making identification of equivalent and substitute parts essential for ongoing design support and procurement.

Substiute Parts

P3100SC

Littelfuse Inc.In Stock: 18583P3100SC Datasheet

Current PartRFQ

P3100SCLRP

Littelfuse Inc.In Stock: 64451P3100SCLRP Datasheet

DirectRFQ

SMP100LC-270

STMicroelectronicsIn Stock: 27501SMP100LC-270 Datasheet

MFR RecommendedRFQ

TISP4350T3BJR-S

Bourns Inc.In Stock: 6161TISP4350T3BJR-S Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the P3100SC are selected based on electrical and mechanical compatibility within the following criteria:

Primary Substitution Parameters:

• Voltage - Off State: 270V to 275V range
• Voltage - Breakover: 335V to 350V range
• Current - Peak Pulse (8/20µs): 250A to 400A range
• Package / Case: DO-214AA, SMB (surface mount)
• Mounting Type: Surface Mount
• Number of Elements: 1

Substitutes are grouped into two categories:

1. Direct Equivalent (Same Manufacturer): P3100SCLRP maintains identical electrical specifications to the P3100SC with active product status and improved compliance certifications.

2. Cross-Manufacturer Equivalents: SMP100LC-270 (STMicroelectronics) and TISP4350T3BJR-S (Bourns Inc.) provide functional equivalence with minor parameter variations within acceptable tolerances for TVS thyristor applications.

Parameter Comparison

Engineering Selection Recommendations

P3100SCLRP (Littelfuse Inc.): This part is the primary substitute for P3100SC. It maintains identical electrical specifications and mechanical packaging while offering active product status and ROHS3 compliance. The only difference is packaging format (Tape & Reel vs. bulk), making it the optimal choice for direct replacement in new procurement.

SMP100LC-270 (STMicroelectronics): This cross-manufacturer substitute provides equivalent functionality with a 5V reduction in off-state voltage (270V vs. 275V) and 10pF lower capacitance (60pF vs. 70pF). Peak pulse current ratings remain identical at 400A (8/20µs). This part is suitable for applications where the voltage margin is acceptable and offers ROHS3 compliance with active product status.

TISP4350T3BJR-S (Bourns Inc.): This substitute reduces peak pulse current capability to 250A (8/20µs) compared to the P3100SC's 400A rating. It maintains matching off-state voltage (275V) and hold current (150mA). This part is appropriate only for applications with lower current requirements and offers ROHS3 compliance with active product status.

Frequently Asked Questions (FAQ)

Q: Can P3100SCLRP be used as a direct replacement for P3100SC?

A: Yes. P3100SCLRP is electrically and mechanically identical to P3100SC. The difference is packaging format (Tape & Reel). Both maintain 275V off-state voltage, 350V breakover voltage, and 400A peak pulse current (8/20µs).

Q: What are the key differences between SMP100LC-270 and P3100SC?

A: SMP100LC-270 operates at 270V off-state voltage (5V lower than P3100SC) and has 60pF capacitance (10pF lower). Peak pulse current ratings are identical at 400A (8/20µs). The lower voltage rating may affect circuit margin in applications requiring 275V minimum protection.

Q: Is TISP4350T3BJR-S suitable for all P3100SC applications?

A: TISP4350T3BJR-S is suitable only for applications where peak pulse current does not exceed 250A (8/20µs). The P3100SC is rated for 400A, making TISP4350T3BJR-S inappropriate for high-current transient suppression requirements.

Q: Are all substitute parts RoHS compliant?

A: P3100SCLRP, SMP100LC-270, and TISP4350T3BJR-S are all ROHS3 compliant. The original P3100SC is RoHS non-compliant.

Q: Do all substitute parts use the same package?

A: Yes. All substitute parts use DO-214AA (SMB) surface-mount packaging, maintaining mechanical compatibility with P3100SC footprints.

Q: What is the difference between P3100SC and P3100SCLRP packaging?

A: P3100SC is supplied in bulk packaging, while P3100SCLRP is supplied in Tape & Reel (TR) format. Electrical and mechanical specifications are identical.